How to Draw a Radius on Google Maps (Free Alternative)
Google Maps is the world's most popular mapping app, but it doesn't have a built-in tool for drawing radius circles. If you need to see "everything within 10 miles of this point," Google Maps can't do it natively — you need a third-party tool.
Why Google Maps doesn't have a radius tool
Google Maps is designed for navigation — getting from point A to point B. Features like radius circles, area measurement, and isochrone mapping are GIS (Geographic Information System) functions that serve a different use case. Google offers these through the Google Maps Platform API, but not in the consumer-facing app.
How to draw a radius circle (step by step)
- Open the Map Radius Tool — it loads instantly in any browser, no account needed.
- Set your center point — search an address, click the map, or use GPS with "Detect My Location."
- Set the radius — use the slider (1–500 miles), type a custom value, or click a preset (5, 10, 25, 50, or 100 miles). Toggle between miles and kilometers.
- Read the results — the circle appears instantly, and the stats panel shows area, perimeter, and diameter.
What can you do with a radius circle?
- Real estate: See all neighborhoods within 30 miles of your workplace
- Delivery zones: Define how far your restaurant delivers
- Signal range: Visualize cell tower or Wi-Fi coverage
- Job search: Find jobs within commuting distance
- Emergency planning: Show evacuation zones around a facility
- Marketing: Define a local advertising radius
Beyond circles: what else can you do?
A radius circle shows straight-line distance, but real travel follows roads. For a more realistic view of what you can reach, try these tools:
- Drive Time Map — see how far you can actually drive in 15, 30, or 60 minutes (follows real roads, not a circle)
- Find ZIP Codes in Radius — list every ZIP code within your radius, with population data and CSV export
- Find Cities in Radius — find all cities and towns within a distance
- Population Within Radius — calculate the total population inside any circle
- Map Area Calculator — draw custom shapes (not just circles) and measure their area
- Distance Between Two Places — measure the exact distance between any two points
- Distance Between ZIP Codes — measure distance between two US ZIP codes with ZCTA boundary polygons
- Distance Between Cities — quick city-to-city distance with population-sorted autocomplete
Why Google Maps doesn't include this feature
Google Maps is a navigation product first. Its core job is to get a single user from a single origin to a single destination, optimize for live traffic, and serve location ads against searches like "coffee near me." Drawing a 25-mile radius circle has almost nothing to do with any of that — it's a GIS (Geographic Information System) operation, the kind of thing site selectors, planners, and analysts do, not the kind of thing a driver does on a phone. Google has historically pushed those use cases into separate products: Google Earth Pro (now free) has a circle measurement tool buried in its ruler menu, and the Google Maps Platform Geocoding and Distance Matrix APIs let developers build radius logic into their own apps for a per-call fee. The consumer Maps app stays focused on routing because routing is what 99% of users open it for, and adding a radius tool would clutter the UI for everyone else. That's the strategic reasoning — it's not a technical limitation.
What "radius" means for different uses
The word "radius" gets used loosely, and the right answer depends on what you're actually trying to measure. A geodesic radiusfollows the curvature of the Earth and represents the true great-circle distance from a center point — this is what SimpleMapLab's Map Radius Tooldraws, using Turf.js calculations on the WGS84 ellipsoid. It's the right choice for service-area analysis, signal coverage, and anything where the question is "how far is it as the crow flies."
A Euclidean (planar) radiusassumes a flat coordinate system and is fine for small areas but distorts badly at high latitudes or across large regions — it's why old-school radius tools drawn on Web Mercator tiles sometimes show oval-shaped circles in Alaska. A drive-time radius (isochrone) shows how far you can actually travel in a given number of minutes by car or transit, following real roads. A 30-mile geodesic circle in San Francisco and a 30-minute drive-time polygon from the same point look almost nothing alike. Use the right one: Drive Time Map for commute, delivery, and service-window analysis, the geodesic radius tool for coverage and proximity analysis, and a planar approximation only when you're working over a small area and don't need precision. Mixing them up is the most common source of confusion in real-estate and retail site-selection projects.
Power tips
Once you've drawn one circle, the workflow opens up. You can drop multiple radii on the same map to compare coverage from two store locations, and the URL hash on the Map Radius Tool updates as you go — paste it into a doc or Slack message and the recipient sees the same circles. To export for use elsewhere, the Find ZIP Codes in Radius tool gives you a CSV of every ZIP code inside the circle, ready to drop into a marketing or operations spreadsheet.
Comparison: Google Maps vs. SimpleMapLab
| Feature | Google Maps | SimpleMapLab |
|---|---|---|
| Draw radius circles | No | Yes |
| Drive time isochrone | No | Yes |
| Multiple circles | No | Yes |
| Calculate area | No | Yes |
| Find ZIP codes in radius | No | Yes |
| Shareable links | Yes | Yes |
| No login required | Partial | Yes |
| Free to use | Yes | Yes |